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Regenerative fuel pump

A fuel pump and fuel technology, applied in non-variable pumps, liquid fuel engines, liquid fuel feeders, etc., can solve problems such as reducing pump efficiency

Inactive Publication Date: 2013-05-01
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the size of the vent hole increases during high flow applications, turbulence (such as flow interruption) in the pump also increases, reducing pump efficiency

Method used

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  • Regenerative fuel pump
  • Regenerative fuel pump
  • Regenerative fuel pump

Examples

Experimental program
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Embodiment Construction

[0017] The figures are drawn approximately to scale. figure 1 A fuel supply system 100 for use in an internal combustion engine 110 is shown. The fuel supply system may include a rotodynamic pump 20 and a fuel tank 112 surrounding the rotodynamic pump 20 . The rotodynamic pump 20 supplies fuel to various downstream components. The rotodynamic pump can be installed vertically in the fuel tank. The fuel delivery system 100 may also include a fuel line 114 in fluid communication with the pump and extending out of the fuel tank 112 to a fuel rail 116 . The fuel rail 116 is in fluid communication with a series of fuel injectors 118 . The fuel injectors deliver fuel to cylinders (not shown) located in the engine 110 at a certain pressure and a certain flow rate. Fuel injector 118 may be a port fuel injector and / or a direct fuel injector. Those skilled in the art will understand that other variations of the fuel supply system can be used to improve the performance of the fuel su...

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Abstract

A rotodynamic fuel pump in a fuel delivery system for an internal combustion engine including a pump housing, a pump inlet channel extending through the housing allowing fuel to be drawn into the pump, a purge orifice extending through the housing and spaced away from the pump inlet channel, the purge orifice allowing fuel vapor to exit the pump, the purge orifice including a purge inlet, a purge outlet, and a purge channel, where the purge inlet is axially offset from the purge outlet.

Description

technical field [0001] The present application relates to regenerative fuel pumps, in particular to rotor powered fuel pumps in internal combustion engine fuel supply systems. Background technique [0002] Regenerative fuel pumps have been used in fuel supply systems for internal combustion engines due to low cost, small size, and quiet operation. Regenerative fuel pumps can be submerged into the fuel tank to allow the fuel pump to supply fully pressurized fuel to downstream components. For various reasons, the temperature of the fuel supplied to the regeneration pump may increase during engine operation. As the temperature increases, fuel vapor bubbles are created in the pump, which reduces the pump flow rate, thereby reducing the capacity and efficiency of the pump. In some cases, flow may be reduced to such an extent that performance is degraded or the engine stops. To address this issue, regenerative pumps may include a purge orifice that allows fuel vapor to be separ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M37/10F04D13/08F04D29/24F04D29/42F02M37/32F02M37/54
CPCF02M37/048F02M37/20F02M37/22F02M37/32F02M37/54
Inventor 郁德全舍文·沙普哈罗德·L·卡斯特尔斯蒂芬·T·肯普弗尔罗伯特·约瑟夫·派尔
Owner FORD GLOBAL TECH LLC